Screwless knob.



No. 778,942. PATENTED JAN. 3, 1905.

A. ARENS. I SGREWLESS KNOB.

APPLICATION FILED MAR.1G,1904.

UNITED STATES Patented Januaryl, 1905.

PATENT OFFICE.

AUGUST ARENS, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR T() P. & F. CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NEcTioUT.

SPECIFICATION forming part of Letters Patent No. 778,942, dated January 3, 1905.

Application filed March 10, 1904. Serial No. 197,393.

To (L7/ whom, t may concern:

Be it known that I, AUGUST ARENs, a citizen of the United States, residing at New Britain, in the county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Screwless Knobs, of which the following is a full, clear, and exact description.

My invention relates to improvements in knobs, and particularly screwless knobs for door-locks and similar constructions.

The object of my invention is to provide a construction which may be readily assembled or separated and which will nevertheless remain securely in position when once adjusted and will not work loose accidentally.

The invention consists in the employment of a spindle, upon which is mounted the knob. An adjusting member is provided for taking up play or arranging theparts properly for doors of different thicknesses. This adjusting device when in its proper position is held by a locking member, which prevents its accidental movement. A clamping-sleeve cooperates with the adjusting member and the knob to hold the knob in its proper position.

The details of construction will be more clearly seen on an inspection of the accompanying sheet of drawings, in which- Figure lis a plan view of a knob and spindle construction embodying the improvements of my invention. Fig. 2 is a vertical section of the same. Fig. 3 is a perspective View showing details of the adjusting member and the locking member.

l indicates the inner knob, and 2 the outer knob.

3 is a spindle, which in the form shown in the drawings is square in cross-section and,

provided with screw-threads on one end. It will be obvious to one skilled in the art, however, that the spindle might be made of other irregular cross-section.

4 is the escutcheon-plate for the inner face of the door, and 5 the outer escutcheon-plate. t These two plates are' adapted, as is usual in structures of this character, to be secured on the opposite sides of the door.

6 is a rose, which forms a bearing for the inner knob construction. 7 is a rose of similar construction for the outer knob. In the form herein shown the rose-plates are formed separately from the escutcheon-plates; but they might, as is common in the art, be made integral. The roses 6 and 7 perform the function of stationary bearings to take the thrust of the knob-Shanks toward the door.

8 is a clamping member or sleeve constituting the knob-shank and provided on its interior with screw-threads coacting with the threaded hub of the inner knob l. This clamping-sleeve 8 has an extension 9, which is centered in the rose-plate 6.

10 is the adjusting member, which is provided on its interior with screw-threads for coacting with the correspondingly-threaded portion ofthe spindle 3.

1l is a shouldered portion formed on the adjusting member for coacting with the corresponding shoulder on the linterior of the clamping member 8.

l2 is an extension from the front end of the adjusting member, which centers and assists in supporting the end of the knob-shank.

13 is a disk, which has an opening similar in outline to the contour of the spindle 3.

14 is a lug, iinger, or projection, which is adapted to fit into one of the recesses 15 in the adjusting member when the parts are in their proper relative positions. The locking member thus constituted when in use prevents the adjusting member from turning on the spindle.

The assembling and operation of the device are\as follows: After the escutcheon-plates have been put in place the spindle is inserted from the outer side of the door until the outer knob coacts properly with its corresponding rose-plate. The clamping member is then inserted into the rose-plate 6. The adjusting member is then threaded onto the spindle 3 and screwed down until proper adjustmentris effected. The locking member is then placed on the spindle and pushed down. The adjusting member must be in such a position that the lug 14 can project into one of the recesses 15. The knob is then put onto the end of the spindle and drawn down tight with the clamping member 8. When the parts are in this position, the locking member is held from working loose and in its turn prevents the adjusting member from moving.

The advantages of the construction are its economy of construction, simplicity, and eiciency of operation and theinsurance against accidental separation of the parts.

The construction is such that adjustment may be effected to a nicety. When a square spindle is used and two recesses are provided in the member 10, the adjustment may be made to within a quarter of a turn by simply removing the locking member and replacing it in its proper position.

What I claim is- 1. In a device of the character described, a knob, a rotatable knob-shank arranged to be screwed onto said knob, a spindle, an adjusting device screw-threaded on said spindle, a locking-washer mounted on said spindle but held against rotation relatively thereto and coacting with said projecting device to prevent the dislocation of the latter, said washer being located between said knob-shank and said adjusting device.

2. In a device of the character described, a

knob, a rotatable knob-shank arranged to be screwed onto said knob, a spindle, an adjusting device screw-threaded on said spindle, a

locking-washer mounted on said spindle but' held against rotation relatively thereto, a projection on said locking-washer arranged toengage said rotatable adjusting device to prevent the dislocation of the latter by the rotation of the knob-shank, said locking-washer being located between the knob and said adjusting device.

3. An adjusting-sleeve for a knob including an adjusting-sleeve screw-threaded on a spindle and rotatable relatively thereto, a washer longitudinally movable on said spindle but non-rotative relatively thereto,an angular projecting shoulder on said washer, arecess in the adjacent end of the adjusting-sleeve to receive said angular projecting shoulder and means for clamping said parts together whereby the dislocation ofthe adjustingsleeve is prevented. A

Signed at New Britain, in the county of Hartford, Connecticut, this 8th day of March,

AUGUST ARENS. Witnesses:

Gr. ERNEST ROOT,Y LAURA MAE BRAMAN. 

